12040013165 has 16 divisors (see below), whose sum is σ = 14720925360. Its totient is φ = 9450846720.

The previous prime is 12040013147. The next prime is 12040013179. The reversal of 12040013165 is 56131004021.

It can be written as a sum of positive squares in 8 ways, for example, as 150945796 + 11889067369 = 12286^2 + 109037^2 .

It is not a de Polignac number, because 12040013165 - 2⁶ = 12040013101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12040013165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76487 + ... + 173003.

It is an arithmetic number, because the mean of its divisors is an integer number (920057835).

Almost surely, 2^12040013165 is an apocalyptic number.

It is an amenable number.

12040013165 is a deficient number, since it is larger than the sum of its proper divisors (2680912195).

12040013165 is an equidigital number, since it uses as much as digits as its factorization.

12040013165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96992.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 12040013165 its reverse (56131004021), we get a palindrome (68171017186).

The spelling of 12040013165 in words is "twelve billion, forty million, thirteen thousand, one hundred sixty-five".